Refactor the node_enabled? method on Geo workers to make it more clear

app/workers/geo_file_download_dispatch_worker.rb

@@ -153,7 +153,7 @@ class GeoFileDownloadDispatchWorker
 
   def node_enabled?
     # Only check every minute to avoid polling the DB excessively
-    unless @last_enabled_check.present? && (Time.now - @last_enabled_check > 1.minute)
+    unless @last_enabled_check.present? && @last_enabled_check > 1.minute.ago
       @last_enabled_check = Time.now
       @current_node_enabled = nil
     end

app/workers/geo_repository_sync_worker.rb

@@ -75,7 +75,7 @@ class GeoRepositorySyncWorker
 
   def node_enabled?
     # Only check every minute to avoid polling the DB excessively
-    unless @last_enabled_check.present? && (Time.now - @last_enabled_check > 1.minute)
+    unless @last_enabled_check.present? && @last_enabled_check > 1.minute.ago
       @last_enabled_check = Time.now
       @current_node_enabled = nil
     end