Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e5dba12980f1edb7398d49b5195adae5a283636835a40c40c9e06df0aab9ce9f' 
  AND token = 'hTEagSAz8P5NV2pYnYYwnE3ADsFG0Ee2Y1WIum6r/lA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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