No. If you completely pay off your loan sooner than your actual monthly installments, you will not have to pay future interest.
For e.g. if your loan term is 24 months and you decide after 6 months to pay off the loan - you will pay interest only up to the pay off time, not for the whole 24 months.
The good thing is that there is no prepayment penalty. So, you can pay off at any time with just one click.