Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '486aabf45bfc67eb9e9eaf02f2db495781c0b87eb99284b579763e382f8c18a6' 
  AND token = 'U8/OEA36FcKWwsOyIoxzE4HHW/OGWFzDcfhjQW7h5zY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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