Not even close, unfortunately.
Exercise will burn a certain number of calories. And in most people, it will in fact increase the number of calories you would have otherwise burned, post-exercise. This increase in post-exercise energy expenditure is not all that huge, however, and it is most definitely finite. It is also substantially lower than the energy expended during the exercise itself.
For some of the basics, see: Excess post exercise oxygen consumption (EPOC)