async def METHOD_NAME(
    self, table_name: str, key: K, web: Web, request: Request
) -> Response:
    """Route request to worker having key in table.
    Arguments:
        table_name: Name of the table.
        key: The key that we want.
        web: The currently sued web driver,
        request: The web request currently being served.
    """
    app = self.app
    try:
        dest_url: URL = app.router.key_store(table_name, key)
    except KeyError:
        raise ServiceUnavailable()
    return await self._route_req(dest_url, web, request)