In addition to the options provided by Arcanist, there is Chaos Warp, which is the common answer to the question of "can red answer enchantments?".
It isn't standard or modern legal, however, and in general red needs to branch out to another colour to be able to interact with enchantments.
Colourless cards, however, are much better at answering enchantments. They're not strictly mono red and are often high converted mana cost (so may not be particularly helpful in your case), but they are castable with just red mana!
Standard options:
Ugin, the Ineffable
Meteor Golem
Outside standard options:
Ugin, the Spirit Dragon
Karn Liberated
Spine of Ish Sah
Ulamog, the Infinite Gyre
There is also the other option of not destroying the enchantment, but instead making use of its effect. Outpost Siege on Dragons would keep you strictly mono red, and allow you still to make use of your tokens if your opponent has a Virulent Plague in play. They'll enter, die immediately, but ping something for 1 on the way out. It has the advantage of being proactive, good in multiples, and you can choose Khans as a card advantage option.
Another option again is to pump your Goblins to be big enough to overcome the effect with the likes of Goblin Chieftain. This is a card you may want to play anyway, but could itself be removed by your opponent to make their Virulent Plague effective again.