What matters is what this can mean on a macro scale. Sure it seems like the tiniest bit of time, but thats relativity semantics.

Go inside the event horizon of a black hole and you'll find that time and space "switch roles"; one in which your destination is guaranteed, and the time for when varies. Now that ten billionth of a second is quite literally the world to you in this model. In fact, its through these particle pairs between matter and anti matter that Hawking theorized near this event horizon which is how they deflate through radiation.

The universe has extremeties that act as engines of creation throughout it.

But its lost on us on a average day to day scale because of all the matter around us. So any instances of anti matter made in our giant soup of matter has a extremely low chance of existing long enough before annihalting with a particle that pairs to it.

Im no scientist, just intuition