If the dir to search is srch_dir
then either
$ find srch_dir -cmin -60 # creation time
or
$ find srch_dir -mmin -60 # modification time
or
$ find srch_dir -amin -60 # access time
If the dir to search is srch_dir
then either
$ find srch_dir -cmin -60 # creation time
or
$ find srch_dir -mmin -60 # modification time
or
$ find srch_dir -amin -60 # access time