curl -v "https://simple-api-overview-mkudlejgroup-apicast-staging.3scale._domain_:443/?user_key=85b044623670d32b5c74885b48250a920f1fb4c0749e67bfc560f82ffbb9411f" 
....
> GET /?user_key=85b044623670d32b5c74885b48250a920f1fb4c0749e67bfc560f82ffbb9411f HTTP/1.1
> Host: simple-api-overview-mkudlejgroup-apicast-staging.3scale._domain_
> User-Agent: curl/7.53.1
> Accept: */*
> 
< HTTP/1.1 404 Not Found
< Server: openresty/1.13.6.1
< Date: Tue, 14 May 2019 08:32:04 GMT
< Content-Type: text/plain
< Transfer-Encoding: chunked
< Set-Cookie: 0f0c3afbc30fb98a86903a4a1d7169ff=8c53498b849b86cd83583faf26fd9eab; path=/; HttpOnly
< Cache-control: private
< 
* Connection #0 to host simple-api-overview-mkudlejgroup-apicast-staging.3scale._domain_ left intact