Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d4ffd4886dce5b8b36140c7457a8f0787b9d40150d5e57bfae8436846c34eca' 
  AND token = 'TV1G884F2Sg24m9HU9aWwYOp9u7lpvKECEyJNobvt8Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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