id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	list_invited_players	NULL	const	PRIMARY,fk_list_invited_players_player_id	PRIMARY	4	const	1	100	NULL
1	SIMPLE	request_tournament	NULL	ref	fk_request_tournament_tournament_id,fk_request_tournament_user_id	fk_request_tournament_tournament_id	4	const	1	100	Using where; Not exists