Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33086ab520e7b3bbed4e30ac08a9b9e81bb86566e5b68853db4f97811023188d' 
  AND token = 'BxhzCeDNQWq2T+nWp6n+HPUAYxyc0UyIavGh1KJQryM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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