Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb9c69ad632e88c10aa5a6c5dbf7266142c178a57a146dfb6327381093c53370' 
  AND token = 'PLnVEyQtswuop7Ulvi44CNooW7ZDOHBFdU/yiVU/FX0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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