Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '884485c412e3f9703fed220708dc649649959f2ca9b1592eb2deb6f3b9bc15cb' 
  AND token = 'PUm2Y5UvzfB3puvejm84s76TH8lxWlpcL1wTt8h+Jd8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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