Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9072e0fee58fc2f91801d5b6834d66eb5f5e1f69c3305eb256a47c6fafac3226' 
  AND token = 'Y1ozPoFBK9bBtcvJpirHBVe6dDk0t9fhlwkeUJN+LuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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