Rinse quinoa under cold water.
In a pot, bring water and salt to a boil. Add quinoa, reduce heat, cover, and simmer for 15 minutes.
Remove from heat and let it sit, covered, for 5 minutes. Fluff with a fork.
In a large bowl, combine quinoa, cherry tomatoes, cucumber, bell pepper, red onion, parsley, and mint.
In a small bowl, whisk together olive oil, lemon juice, salt, and pepper.
Pour dressing over salad and toss to combine.