Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '38929005ddb6cf52fe8b62fe18e1e344d38338597f8d8cb15c63e5811f25cddd' 
  AND token = 'v5y3wRn0RzOWBhjKDSlq5nYilOuPlid4mcec1kjQ1bo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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