Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5172c382906071bdcfb3958f1cc8d24e30bc7f05d7c83b9a1c2cf970b85216a3' 
  AND token = 'q5DnN9axNIPijlRyWi7CQUougvIarUvOcRjnpgncL/0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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