Hi guys! ## Context Little introduce to a context of the issue. I have about **33 million rows** on a table. The table structure looks like that: `(id, date_time, list_id, item_id, modified_date_time, title, json)` index: `list_id, modified_date_time` ## Issue I did select query by `WHERE clause with list_id=? AND item_id=? AND modified_date_time=?` And I've gotten a result for **150.7ms** on average, stdev: 3.59 ms, stderr: 0.804, ci 95%: 0.352. For me it's too long. I want to select a row of the table for less than **70ms**. Is it possible? Does any body help me? What I should to do?