ANSWER:

Scholars say that the 2 rakahs after asr are something specific only for the Prophet salla Allahu alaihi wa Sallam and not for anyone to regularly pray it except him.  

I saw a Hadith of Sahih Bukhari with the narration of Aisha RA where Prophet Sallallahu Alaihi Wa Sallam used to offer 2 rakah Sunnah prayer after the Asr prayer, and he never used to miss it. Now he didn’t publicize it because he wanted to keep it easy for the believers. My question is, can we offer these 2 rakah after the Asr prayer???