QUERY PLAN
Aggregate (cost=17.13..17.14 rows=1 width=8)
-> Sort (cost=16.90..16.94 rows=15 width=159)
Sort Key: tbl_object_change_logs.created_at DESC
-> Seq Scan on tbl_object_change_logs (cost=0.00..16.61 rows=15 width=159)
Filter: ((object_id = 1) AND (object_type = '1'::smallint))