Я думаю:
SELECT punishment_id, punishment.reason, cooldown.id, cooldown.time_left FROM player INNER JOIN punishment ON player.most_uuid=punishment.most_uuid INNER JOIN cooldown ON player.most_uuid=cooldown.most_uuid WHERE player.most_uuid=294153545139114775
Может быть преобразовано в:
SELECT punishment_id, punishment.reason, cooldown.id, cooldown.time_left FROM punishment INNER JOIN cooldown ON punishment.most_uuid=cooldown.most_uuid WHERE punishment.most_uuid=294153545139114775
Это работает, только если вы не хотите проверять существование на столе игрока.
Если вы сделали это специально, я рекомендую использовать GROUP BY:
SELECT punishment_id, punishment.reason, cooldown.id, cooldown.time_left FROM player INNER JOIN punishment ON player.most_uuid=punishment.most_uuid INNER JOIN cooldown ON player.most_uuid=cooldown.most_uuid WHERE player.most_uuid=294153545139114775 GROUP BY punishment_id
Надеюсь, это полезно. Bye