The reason why the Christian Cage vs Jungle Boy match was over in a matter of a minute is because Cage is suffering from an injury which prevented him from having a proper wrestling match.
While it's still unclear what Cage's injury consists of, he was only cleared to do what he did on the show – a spear and hit the Killswitch for the pin.
Jungle Boy was attacked by Luchasaurus during his entrance and received a chokeslam and a powerbomb before he even got to the ring.
The former World Heavyweight champion was selling an arm injury which played out on Dynamite a few weeks ago when Jungle Boy slammed his arm on the steel steps.