Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '299cbc42b93753846158caecf29473b88e496306a94d7cd26481df7402d9c4b0' 
  AND token = 'O7fvo49Wv1l+QA/KtokfSWE5NwpkjPKbFZWbv5hW01Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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