Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '299db605742b8091d9e619dea9c8c82121aa6043d404eaf2499c17e449ff8722' 
  AND token = 'X6ZFwad0t6SGsr0Ot8xcijPgReP5DcEArtDAl3uqJPQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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