Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '359525593a5c5567f2896e2c95127ce77d99be1aa50450128d5e452180ee6455' 
  AND token = 'XbFBt+gk0IgzYiIbC4AurFpUCbhAtBmUvLbdfOpLYvw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}