I hope they don't, because that would contradict what they've already established. When Superman first showed up, they commented that he aged more slowly than a human and was actually significantly older (he's actually 39 according to the
Arrowverse Wiki timeline).
But then, they already made the same kind of mistake with the Argo City denizens in
Supergirl's last season. Alura looked the same age as her hologram, even though her hologram represented how she looked nearly four decades ago when Krypton exploded. She should've been in her upper 70s. By the same token, Kara's childhood friend Thara should've been 24 years older than her because of Kara's time in the Phantom Zone. Instead, they cast an actress only 6 years older than Melissa Benoist.
EDIT: Oh, and let's not forget that Cat Grant saw Lois as her rival in her early years at the
Planet, before she became Queen of All Media. So that suggests that Lois should be mature enough to be credible as a longtime antagonist to Calista Flockhart. Not to mention that she needs to be credible as the
older sister of Lucy Lane, whose portrayer Jenna Dewan is now 37 years old.