Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abe36fda6dda1100f51097b4e8cf4182826cd82eacfd952ce6efa410b4030024' 
  AND token = 'gLTp6FLYDuY+L5oXQGoiDiEw9DXBciYsjovnbnXcL/Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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