Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a04d7326335b206169fb972eb570ab6a531fdb655af18aca3ab9db22828a9965' 
  AND token = 'Z46ELtPHLRXGBGhYy/qhDR604RucUsTL+j7XEO3yLHs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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