Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de03dd389138a4bf8182bfbaa1c3e6aeb828889312a72ba3e2ae11c759ecbda8' 
  AND token = 'qOWuORY69AVBnkjaF3OWWjY0v8g9zdSSRAsL2EuQnRc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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