Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2089ce41662b06d6484b48a87136d8b6bbfbd7b5b542a819b6de62de27afea44' 
  AND token = 'RAAd68HR6xfgGjkctttWG2f14Yp0SOH1KXn90j2uZQs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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