Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11e0fbd1f2621c6cfe331612a49b6afe9a7214c256e660c28330924e39de6a0a' 
  AND token = 'rojEJaASUJwJUgSlFOiZY0WldI3L9YFz4zKlYxJxFys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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