Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d9dcc1f77c5adea059da9cae7f58d7b735733266e88e0bd4f0dc5270643355b' 
  AND token = 'MtqdDO70Kj3WVzbh8K2A6GHm8PWLv16QdzHnRzOYt5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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