Just as the others said, if it regains consciousness it would die quickly.
I get your concern too, since the second last time i fed live Mizuchi didn't fully kill it(I could notice it still twitching, just barely though) and ate it anyway, before she could fully feed it I ran to my mother(she has way more experience with them than I do) and asked if it'd be fine, or if i should intervene, she said it'd be fine, that it'd suffocate within minutes if it's still alive(just as someone else already said), and thought I was crazy for thinking it would harm her being eaten still partially alive.