Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ae6c94e8f5d33f244bb97693d450de8f96e98f64ece2cd8a7a23430e6adb6cc' 
  AND token = 'avnsHILNdgCk3F0I5HwLnr86F8zvlI7B8ArZ8LrIEU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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