As Chelsea scored the only goal of the game which eventually won the match, Clarkson can be seen springing in bear-like delight over the penalty.
The German goalkeeper was at fault for Real's opener, rolling the ball out with Karim Benzema standing too close to him and allowing the France global to divert it into the net, and he then let Gareth Bale's long-range drive slip through his grasp as Madrid won 3-1.
Sadio Mane would soon equalise, only for a spectacular Gareth Bale effort to re-establish Real's lead.
Merseyside Police have said they will investigate any online threats against Karius and his family.
Karius couldn't hide his emotions after full-time.
The German stopper has thanked Liverpool fans for supporting him after the game, while apologising for his performance on the night. "It's normal to want more playing time, I understand". Footage posted to Twitter by Jan aage Fjortoft captured the moment.
The Telegraph Sport columnist joins host Thom Gibbs to discuss the game, how Loris Karius might be feeling and where his old team need to strengthen in the summer.More news: Rockets' Chris Paul ruled out for Game 6 of Western Conference Finals
"We have fallen short and there are no words that we can say to Loz that will make it better for him".
Unfortunately, what occurred in Kiev, will go down in the history books as Real Madrid became the first team to win the Champions League three times in a row in its current format. 'My Liverpool boys fought hard and I'm proud of them.
Then you get the quick response and Karius is relieved.
It was a bitterly disappointing end to the season for Liverpool, who lost star man Mo Salah to injury after half an hour.
While it was initially announced that Salah would miss the World Cup as a result of a dislocated shoulder, the Egypt FA later tweeted that the Reds' no.11 had only sprained his shoulder ligaments.
"It's not the ending we wanted for our Champions League campaign but, you know, sometimes those things happen in football".