You can do either of the following, both are easy & inexpensive :
1 - put hive stand on short pieces (3" tall) of 2" pvc, which set in small conatainers of oil, ants won't cross the oil. I have mine on the pvc set in cheap metal ashtrays filled with oil.
2 - sprinkle cinnamon liberaly around hive, will have to reapply as necessary, ie after it rains.
Both will keep the ants at bay.