Files that can't be scanned are just that, not an indication they are suspicious/infected, just unable to be scanned.
Many programs (usually security based ones) protect their files for legitimate reasons.
In this case, given that it is an avast file in an avast folder there is nothing to be concerned with.
Looking at the file name and location I suspect that there may well have been an avast update in progress at the time of the scan, hence the Components.ini.new (a new updated version of the Components.ini file).
Once that update was finished I guess this Components.ini.new file would replace the Components.ini file and why it is locked.
A lot of suppositions I know but I don't believe there is any issue here.