Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d3ed66d301440647b835d793d090d8473b929587b32a7898589122d3786aceb' 
  AND token = 'Weze0g40wm52rdluAOMQiYdO8O/inLufzIgkcEP/uUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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