Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dccc82b8ab1382a1913bc8041a4e3bba937700682ad530396293bc05d6743974' 
  AND token = 'tfSFWuKpVqb1aSzGDgybn8gdFLTTiYBjT0uJeqh0AVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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