Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '281088d4691926740ddcea714a53a4459675d0142fbac7a6ee6cbb5fa916b589' 
  AND token = 'S8hirLuA9AkOr28kUGSpVUTK6+ZdQs70sSzjgOSyf9E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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