Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6169243e6e5977a78a5d768112e47bd7305593206ca02e6aea9a4ae36272a43e' 
  AND token = 'kA1Ih5si8PUjxNXuS5W5bj7LDudANoqQp3Sa6MMHKnE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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