https://github.com/apache/airflow/blob/3a349624a20d3432dc75e337d6ffb1109a50e451/airflow/providers/amazon/aws/operators/athena.py#L49

What is the unit of measurement of time used here?
airflow/providers/amazon/aws/hooks/athena.py
self, query_execution_id: str, next_token_id: Optional[str] = None, max_results: int = 1000
    ) -> Optional[dict]:
        """
        Fetch submitted athena query results. returns none if query is in intermediate state or
        failed/cancelled state else dict of query output
        :param query_execution_id: Id of submitted athena query
        :type query_execution_id: str
        :param next_token_id:  The token that specifies where to start pagination.
        :type next_token_id: str
        :param max_results: The maximum number of results (rows) to return in this request.
        :type max_results: int
        :return: dict
        """
        query_state = self.check_query_status(query_execution_id)
        if query_state is None:
            self.log.error('Invalid Query state')
            return None
        elif query_state in self.INTERMEDIATE_STATES or query_state in self.FAILURE_STATES:
            self.log.error('Query is in "%s" state. Cannot fetch results', query_state)
            return None
        result_params = {'QueryExecutionId': query_execution_id, 'MaxResults': max_results}
        if next_token_id:
            result_params['NextToken'] = next_token_id
        return self.get_conn().get_query_results(**result_params)
    def get_query_results_paginator(