Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ff630bfa09a56a21616d4f12708b6e3681e678e5fbdb41e84a1a10180b263d74' 
  AND token = 'OkjppiFI19eXds1OXNYnduK2j5qfR19Bj7kxwWdOdIA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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