Cut the broccoli and cauliflower into small, evenly-sized pieces. Slice the cucumbers and quarter the cherry tomatoes. Chop the crab meat into pieces similar in size to the vegetables.
In a separate bowl, mix together the mayonnaise, minced garlic, and lemon juice until well combined.
Pour the dressing over the chopped vegetables and crab meat. Stir everything together until the salad is well coated with the dressing. Adjust the seasoning with salt to taste. Serve the salad fresh and enjoy its crispiness!