id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	filtered	Extra
1	SIMPLE	gmap_marker	NULL	range	PRIMARY,fk-gmap_marker-id_gmap_map,idx-gmap_marker-model	fk-gmap_marker-id_gmap_map	9	NULL	1315	0.05	Using index condition; Using where