QUERY PLAN
Update on tbl_unread_comments (cost=0.00..5650.81 rows=1 width=25)
-> Seq Scan on tbl_unread_comments (cost=0.00..5650.81 rows=1 width=25)
Filter: (((object_type)::text = '20007'::text) AND (object_id = 1560) AND (remind_user_id = 1004))