Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1aafd72bb8b2bc727a77427cc1c13d9318f2b1e6a7d2b09ce4b94f46e59e7137' 
  AND token = 'nOMy/i48+sg67fb6YmXIqiTie+QY1NVTlUF6UvZ3bSc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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