Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eca0669a0e3fea7cdbc124ec769d8aac0e05e99aa4fea56f80a9401c23af1bcf' 
  AND token = 'TbG/5wXpAr+yW2aT47dyaoamapEwsxtiZJhDVM5JDlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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