SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '27c154958cc53a17ac907ffa185977144af1437b58562fd5fc8fbf8a96749175' 
  AND token = 'FVciK5Zxvph2Xm/swdz9O9sJ/X7nGNbgWEjOKezoOZc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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