Are you saying that central bank interest rate is targeted to be 2%? If so, I don't believe that is true. The target is 2% inflation and full employment, the interest rate is adjusted to whatever level achieves those goals.
So the central bank interest rate isn't targeted to be 2%, but it will be somewhere close to it: too high, and they drive inflation well above 2% all on their own. They can stay lower for quite a while (see the past ~15 years) but that was already considered an emergency situation.
Before 2008, the ECB moved between 1.5% and 3.75% (https://www.ecb.europa.eu/stats/policy_and_exchange_rates/ke...) with at most 16 months at a time above 3% which was followed by a bump down to 1%.
We'll have to see where things go from now, but the recent shift of their language towards "2% in the _medium_ term" indicates to me that we'll stay in the higher end of the spectrum for a while instead of quickly trending down again.
Isn't it the reverse relationship? Increased rate decrease the velocity of money and decrease inflation?
(At the risk of causing a recession)
Central banks have been raising interests to fight inflation so far.