45 minutes album is not 45 minutes live show.
Live show has pauses between songs, talks, encores, etc, which makes it much longer.
I've been to few live shows of my favorite Ukrainian band. They've released badass album recently, and I've been at 4 shows after it. They've been playing all songs first, and then after a break - older songs. But those shows lasted 2.5 hours approximately. Shows had around 30 songs. And it was dope.
That's what you get from not smoking, drinking, etc. vocalist is 38 years already, but he's like energizer on the stage.
Jumping, stagediving, etc....
If only LP played whole new album (15 songs) and then another 15 songs, maybe after a short break (~5-10 minutes with some background music) - it would be really cool. But I highly doubt that they have enough stamina for it.