Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36a5fa7b9af904ccefaf553f1b1e4e52ca93ceb8d2ca7f88feea90423652ed1f' 
  AND token = 'wtAkukrYKxjygToo0G81GHcMvpAVGhMlIVLR7FdIl40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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