Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2abfff2710412490ba8ea141dbe27f60b96485a0d606330399932cd9ff5b70e' 
  AND token = 'l+tmdUelJ9X7H2zbT/gEcWkQ1CYADVVEz2UBBHUtsTs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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