development=# select * from event_media_feed_group_items;
 id | event_id | created_at | updated_at | last_created_at
----+----------+------------+------------+-----------------
(0 rows)

development=# insert into event_media_feed_group_items (event_id, created_at, last_created_at, updated_at)

development-# select max(event_id), now(), max(created_at), now() from event_media_feed_group_items where event_id = 1 having max(created_at) < now() - interval '5 seconds';
INSERT 0 0

development=# select * from event_media_feed_group_items;
 id | event_id | created_at | updated_at | last_created_at
----+----------+------------+------------+-----------------
(0 rows)

development=#