Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '528a19ac0ad9265f119949b761ae8bfddf9c4458d771f3c0c6d23d15635b9168' 
  AND token = 'lby+hobYhyU+J7SpEgqOBUUa9ySeF5SNLqrG57pW6Zk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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