Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00f457c17f32b902e59138cb9ecd63fc5a931f82285d5ba535427ad32a486ef1' 
  AND token = 'HNJXtyERzZJUcvWfWnxK9xhX0fv3a+Ry84GF5kgyzMo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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