In a small glass jar or bowl, whisk together the lemon juice, Dijon mustard, honey, minced garlic, sea salt, and black pepper until the dressing is well combined.
Pat the shrimp dry with paper towels to ensure a clean sear in the pan.
Heat the olive oil in a large non-stick skillet over medium-high heat until shimmering.
Add the shrimp to the skillet in a single layer and cook for 2 minutes, then flip and cook for another 1-2 minutes until they are pink and opaque.
In a large mixing bowl, combine the cooked quinoa, halved cherry tomatoes, diced cucumber, and chopped parsley.
Drizzle the lemon-herb dressing over the quinoa mixture and toss thoroughly to coat all the ingredients.
Divide the salad into serving bowls and top with the warm sautéed shrimp.