i believe you are getting the error because you are trying to install woocommerce via Add New in the WordPress plugins section of wp-admin and your internet connection isn't fast enough.
consider downloading your plugin's zip file next time. then unpack the zip file you downloaded for the plugin in your /wp-content/plugins folder.
then when you log into wp-admin, go to plugins and you will see the plugin listed with other plugins but unactivated. just activate it then and the plugin should work fine.
or try to get a faster internet connection. if you are a developer i will not recommend increasing the execution time in php.ini because that is an indication that your code is not optimized and any server running it will have problems when simultaneous visitor count rises. i'm just saying.