Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59d4beb847bbf4d2ac78fe87277167cfd1b305d741a35409effb39b0e8ca4078' 
  AND token = 'EKIY1Oz4KEhGFVoKxZwrt0ebE8S+A6z4EX2KvqiEHtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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