Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '617e3ea8bc43d7931795ef213478c1ac9c005024b74e60bfe05d753448b0c075' 
  AND token = 'J1upUF7OMRaxYP2BZUhA0UQOZ8MI8b1sicJzLdqcgjc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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