Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '129579a7862006cb6103c0c1cb8feca81b4f37686491ae574d20d315e27ce540' 
  AND token = 'aJ0Yt+AYCPjH+MiG95QmkJbwDRo8WCalL0UJ9abPTNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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