Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16df03b96c720c29b672381092bedcfe5576657d9184c9ad82f526ffc9d4277f' 
  AND token = 'Asnc33ITDZ7gfV8xuNhhBkQzvP0hqktek44ilviHZMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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