Unless the torture somehow causes Vast consequences larger than the observable universe, or the suicide of someone who otherwise would have been literally immortal, it doesn't matter whether the torture has distant consequences or not.

What about the consequences of the precedent set by the person making the decision that it is ok to torture an innocent person, in such circumstances? If such actions get officially endorsed as being moral, isn't that going to have consequences which mean the torture won't be a one-off event?

There's a rather good short story about this, by Ursula K LeGuin:

The Ones Who Walk Away From Omelas