SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2144a0132218db1f73185262e944ebe15201919b5d4386fc4a3ec10531b83bf0' 
  AND token = 'VlJn5dAjLZpYG8y+/+BVvZIMt7Z5wWQwmfghQ3ZUFG0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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