Is there a way to force case sensitivity in MySQL / Rails for a single find?

Tag.find(:some-special-option-here)

SELECT * FROM mytable WHERE myfield='Value'

SELECT * FROM mytable WHERE BINARY myfield='Value'

create_table( "page_infos", :force => true, :options => "ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE utf8_bin") do |t|
      t.string   "title",       :limit => 120
end

ALTER TABLE `sets` CHANGE `set_name` `set_name` VARCHAR( 64 ) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL