clean up logic, credit to @alexeyts

Author: jacobevans

eb_sqs/worker/service.py

@@ -36,7 +36,7 @@ def process_queues(self, queue_names):
 
         queue_prefixes = [prefix.split(self._PREFIX_STR)[1] for prefix in prefixes]
         static_queues = queues
-        last_update_time = timezone.make_aware(datetime.min + timedelta(hours=24))
+        last_update_time = timezone.now() - timedelta(seconds=settings.REFRESH_PREFIX_QUEUES_S)
 
         logger.debug('[django-eb-sqs] Connected to SQS: {}'.format(', '.join(queue_names)))