Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9a95ac38c88ec038141ea30bb44a8f875823ae3a472add6394a15b35af14a23' 
  AND token = 'kVOs6uqKz9U+B/I1dPB1YxXS50D6opc9Sxp3sswdYCA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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