Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b394049764eb673c208a1c16f530dc557c30da5e781d4c240be648072581970' 
  AND token = 'WVAVq0zm6OkVBOSRSpKVkannx2wvNfUY36eCTa2j7j4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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