In a medium saucepan, combine rinsed quinoa, water, and salt. Bring to a boil, then reduce heat to low, cover, and simmer for 15 minutes or until liquid is absorbed.
While quinoa cooks, bring a small pot of salted water to a boil. Blanch asparagus and peas for 2 minutes, then immediately transfer to an ice bath to stop cooking. Drain and pat dry.
In a small bowl, whisk together olive oil, lemon juice, honey, and minced garlic to create the dressing.
Fluff the cooked quinoa with a fork and transfer to a large mixing bowl. Allow to cool slightly.
Add the blanched asparagus, peas, sliced radishes, diced cucumber, mint, and parsley to the quinoa.
Pour the dressing over the salad and toss gently to combine.
Fold in the crumbled feta cheese and serve at room temperature or chilled.