Even if you accept the Big Bang as an established fact, the answer to this is still false. The Big Bang was an expansion, not an explosion.
Eggs Ackley. Space and time came into existence in the initial creation. An explosion has to have something (spacetime) into which expansion happens. Spacetime was created at the initial creation. It is interesting that Guth’s ‘inflationary period’ is not called an explosion ...
The universe began with a really REALLY tiny explosion.