Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c1ed2fd9759f018915cc97ca53baa3acdfb2cea0a7d2e6348034b2496e1a95a' 
  AND token = 'p2z5+TMndepmbEit+jNvdOAkDoTFFXh1lBGsrkPR7Pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}