Parabola GNU/Linux-libre installation: problem with key

I'm trying to install Parabola GNU/Linux-libre (OpenRC) and I repeatedly get this error during pacstrap /mnt base elogind udev-init-scripts.

error: some-package: signature from "A Packager " is unknown trust
:: File some-package.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n]
error: failed to commit transaction (invalid or corrupted package (PGP signature))

*Note: I cannot copy and paste the actual error because I'm installing it on another machine, but the error is the one show above*. I tried to fix it by trying to use the [commands listed on the parabola wiki](https://wiki.parabola.nu/Installation_Guide#Verification_of_package_signatures) , but with no luck and then I realized something. I looked the key that repeatedly fails on [keys.gnupg.net](keys.gnupg.net) and I found out this line (I prefer to censor some part of the key to make it anonymous):

Type bits/keyID     cr. time   exp time   key expir
uid XXX YYY 
sig  sig3  ZZZ 2017-01-24 __________ 2018-01-24 [selfsig]
sig  sig3  ZZZ 2018-01-21 __________ 2018-07-20 [selfsig]
sig  sig3  ZZZ 2018-07-17 __________ 2019-07-17 [selfsig]
sig  sig3  ZZZ 2019-07-17 __________ 2020-01-13 [selfsig]
sig  sig3  ZZZ 2019-07-17 __________ 2020-01-13 [selfsig]
sig  sig3  ZZZ 2019-10-26 __________ 2020-01-13 [selfsig]
sig  sig3  ZZZ 2020-01-13 __________ 2020-07-11 [selfsig]
sig  sig3  ZZZ 2020-07-11 __________ 2021-01-07 [selfsig]

As far as I can tell, this key expires *today* and it has not been updated, hence the failure. It's possible **and advisable** to bypass the problem by somehow (how?) tell parabola that the key is fine? Thanks