Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78d3417a845c4c47f7c39918fa8fbbb46a9dfc67c396ac664e4fd27162e24767' 
  AND token = 'uTcJMKOeXkURJacA8ujiYXM6IupzTA/hopBFnsgAfL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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