code: public static function locate($column, $value)
      {
          $table  = new static();
          $select = $table->select()
              ->where("{$table->getAdapter()->quoteIdentifier($column)} = ?", $value)
              ->limit(1);
  
          return $table->fetchRow($select);
      }
docs: Fetches one row in an object of type Benri_Db_Table_Row, or returns
  null if no row matches the specified criteria.
  
  @param string $column The sql `where` clause
  @param mixed $value The value to use against the `where` clause
  @return Benri_Db_Table_Row or null The row results, or null if no row
  found