Caffeine raises your heart rate for a short(ish) time, but at least for moderate amounts of consumption that doesn't seem to have any negative effects. There are even some studies that suggest that one or two cups of coffee a day may have health benefits, including the cardiovascular system.

Cocaine on the other hand seems to raise your resting heart rate because it damages your cardiovascular system [1]. Your heart has to work more to achieve the same result, the opposite from what you want to achieve with exercise.

1: https://journals.plos.org/plosone/article?id=10.1371/journal...