Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e1ed3e091a7866146ca5e216a975ee7c75ca2b83cb21d8963b432af29fbf4ff' 
  AND token = 'Jza337U1KgbmSKM3RWe2D0Txzx2NGGeaOWCJMLxoNIk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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