# File lib/sms_on_rails/activerecord_extensions/lockable_record.rb, line 172
      def stale_record_conditions
        query = []
        query << "#{locrec_columns[:status]} = :status"
        query << "#{locrec_columns[:processed_on]} < now() - interval :min minute"
        map = {:status => locrec_status[:processing],
               :min => locrec_options[:recover_stalled_minutes]}
        [query.join(' AND '), map]
      end