id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	PRIMARY	form_submission	NULL	ref	FK_form	FK_form	5	const	13	10.90	Using where; Backward index scan
2	DEPENDENT SUBQUERY	innerpform	NULL	eq_ref	PRIMARY	PRIMARY	4	portal.form_submission.formId	1	100.00	NULL