Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7aa9f6c27706848bc1c107f87f79f5a9ea0ecea4d15d188cdda3d5e5972b0552' 
  AND token = 'a69DDwsZGnUnRmx13wqM313ZAsDBpDpwv53PnHQ0FCU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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