Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdd2f13feec24c69bbc89902dad41c3f8822e8c3902ffa980cdb86118c30e87f' 
  AND token = '60KW/QFgXImu2x1ee5o9wRHkoLkG8QGgMWNjoX2cUs4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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