Of course, you didn’t say what “close to Earth” means, but even without that, we don’t know of any habitable exoplanets anywhere. We only know of exoplanets that might resemble the approximate size of our planet and within what we envision as the “Goldilocks” zone around a star.
Of those, the nearest system seems to be the Trappist-1 system pictured below.
Now this system is a mere 40 light years away and within our local star group. However, even if we could go over 13 million miles an hour, over sixty times faster than the fastest space vehicle we’ve ever managed to achieve, it would still take over 20,000 years to reach there.
So again, the answer depends on two things: 1) We have no idea if any exoplanet is actually habitable, and 2) “close to Earth” is not very close.
Is that close enough for you?
The galaxy and the universe beyond is way bigger than most people think. “Close” is not very close at all.