Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9507dbbca1c0b57090918ad723c1933bbfef73053fa31ac633a58c341c6af8b8' 
  AND token = 'LjqyWO2cG7jsJ5u1JIIOz3ypl57eMZTtMRiuqUviRc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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