Получение непрерывных уведомлений FCM с php сервера на android

Question

Я использую FCM для push-уведомлений. Но когда я вызываю API с Android, он попадает во множественные безостановочные уведомления.

Вот мой код Android для сервисов, где мой сервис постоянно проверяет столбец finish_by. в базе данных. если API обнаружил данные о текущем времени в базе данных, тогда FCM обращается к соответствующим пользователям.

    public class NotifService extends Service {
    public static final int notify = 1000;  //interval between two services(Here Service run every 5 Minute)
    private Handler mHandler = new Handler();   //run on another Thread to avoid crash
    private Timer mTimer = null;    //timer handling
    CharSequence s;
    @Override
    public IBinder onBind(Intent intent) {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onCreate() {
        if (mTimer != null) // Cancel if already existed
            mTimer.cancel();
        else
            mTimer = new Timer();   //recreate new
        mTimer.scheduleAtFixedRate(new TimeDisplay(), 0, notify);   //Schedule task
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
       // mTimer.cancel();    //For Cancel Timer
        Toast.makeText(this, "Service is Destroyed", Toast.LENGTH_SHORT).show();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return START_STICKY;//super.onStartCommand(intent, flags, startId);
    }

    class TimeDisplay extends TimerTask {

        @Override
        public void run() {
            // run on another thread
            mHandler.post(new Runnable() {
                @Override
                public void run() {
                    curtime();
                    String datime = String.valueOf(s);
                    callAPIHIT(datime);
                  }
            });
        }
    }

    private void callAPIHIT(String datime) {
        Call<GetNotifReceiversModel> categoryModelCall = RetrofitClient
                .getRetrofitClient()
                .create(ApiInterface.class)
                .getNotifReceivers(datime);
        categoryModelCall.enqueue(new Callback<GetNotifReceiversModel>() {
            @Override
            public void onResponse(@NonNull Call<GetNotifReceiversModel> call, @NonNull Response<GetNotifReceiversModel> response) {
                try {
                    Toast.makeText(getApplicationContext(), "Service  "+response.body().getData().get(0).getTask_name(), Toast.LENGTH_LONG).show();

                } catch (Exception e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onFailure(@NonNull Call<GetNotifReceiversModel> call, @NonNull Throwable t) {
                Toast.makeText(getApplicationContext(), t.getLocalizedMessage(), Toast.LENGTH_LONG).show();
            }
        });
    }

    public void curtime(){
        Date d = new Date();
        s = DateFormat.format("dd-MM-yyyy HH:mm:ss", d.getTime());
    }
}

Вот код php-сервера FCM, где мы нажимаем уведомление FCM из этой строки кода и вызываем егоAPI в Android.

    public function getNotifReceivers(Request $request){
            $fin_date = $request->input('fin_date');
            $role = 'user';
            $api_key = 'AAAA....';
            define('API_ACCESS_KEY',$api_key);
            $fcmUrl = 'https://fcm.googleapis.com/fcm/send';
            $query_out = app('db')->select("SELECT task_id, task_name, task_status FROM `pts_task` WHERE finish_by = '$fin_date'");
            if ($query_out) {
             if($role == 'user'){
                $query = app('db')->select("SELECT firebase_tokenId FROM `pts_user` WHERE u_role != 'user' AND firebase_tokenId IS NOT NULL");
            }
            else if($role == 'super_user'){
                $query = app('db')->select("SELECT firebase_tokenId FROM `pts_user` WHERE u_role NOT IN ('user', 'super_user')  AND firebase_tokenId IS NOT NULL");
            }
            if ($query) {
               $someArray = json_decode(json_encode($query),true);
                $return_array = array();
                for($i = 0; $i < sizeof($someArray); $i++){
                   // if($someArray[$i]["firebase_tokenId"] != null){
                        $arr[$i] = $someArray[$i]["firebase_tokenId"];
                        array_push($return_array, $arr[$i]);
                  //  }
                }
               $array = json_decode(json_encode($query_out), true);
              $task_name = $array[0]['task_name']; 
                $status = $array[0]['task_status']; 
             $notification = [
                    'title' =>'task - '.$task_name,
                    'body' => 'STATUS - '.$status
                ];
            $extraNotificationData = ["message" => 
            $notification,"moredata" =>'dd'];
                $fcmNotification = [
                'registration_ids' => $return_array, //multple token 
                  array
                //'to'        => $token, //single token
                'notification' => $notification,
                'data' => $extraNotificationData,
                'click_action'=>'MY PACKAGE NAME'
            ];
                $headers = [
                'Authorization: key=' . API_ACCESS_KEY,
                'Content-Type: application/json'
            ];
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL,$fcmUrl);
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_POSTFIELDS, 
            json_encode($fcmNotification));
            $result = curl_exec($ch);
            curl_close($ch);
           // echo $result;
           return response()->json(['status' => $fin_date, 'msg' => 'List of Category', 'data' => $query_out]);
            }
        }else{
                return response()->json(['status' => 'fail', 'msg' => 'Failure', 'data' => $query_out]);
            }
        }