Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '890fcdeb9694d3c0176260275dd5d58daa939049d3df8558f5a4807458e79937' 
  AND token = 'C/k9kq7VJLiuM0bAhTvdBkIzCiV6cwpCBPoFFXI98oE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}