Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ab122c774e04219e7b3062369f682620194117fb5c50b8291bef3eef2ffb7958' 
  AND token = 'HiZhM1HRdZifeUCqTJ3eGfqOm/XI/6g/yHbaKq0x8l0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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