Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eda5a6001fd6cc085b511ec2d9a5001b4ee1a45b9a952d954cb8701791ff85de' 
  AND token = 'xtBvbUHJbtUe1tbI8zX7Bo1D+dNplRL5B/fRC0V12H4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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