Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d220bf6bf2f6e8729bcd91ab1d068acfbfef63bd4e5e806699bca6260bba19e' 
  AND token = 'sNeZ6jUmAr5Uz7xhLX0lo56HigdYQt3HGW4g9GErYWU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}