Making HTTPS requests using ESP8266 AT commands
HTTPS requires that you make an SSL connection not a TCP connection.  To do that you need to use
AT+CIPSTART=&quot;SSL&quot;,&quot;54.166.71.140 &quot;,443 

You also need to configure SSL itself.
However the SSL support is not great and struggles with some sites (no SNI support by all accounts).
So you're better off programming the ESP8266 directly with your own sketch to make any HTTPS requests and process the data for you.