Kueri SANGAT lambat (>30 detik) di php, tetapi cepat saat menjalankan kueri di phpmyadmin

Dengan kueri Gabung seperti ini, saya memiliki hasil yang sama dan berfungsi :) masih tidak tahu mengapa kueri bersarang membutuhkan waktu hingga 40-50 detik. Terima kasih kepada pengguna Dibakar Paul yang membantu saya!

$sql1 = "Select distinct title, artist, album 
from songs where id not in(Select distinct song.id
from songs song inner join playlist playlist 
on playlist.song_id=song.id
inner join playlists playlists 
on playlists.playlist_id=playlist.playlist_id
and playlists.name = '$playlist_name')";

$sql2 = "Select distinct song.title, song.artist, song.album
from songs song inner join playlist playlist 
on playlist.song_id=song.id
inner join playlists playlists 
on playlists.playlist_id=playlist.playlist_id
and playlists.name = '$playlist_name'";