Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60449ab43faf3aba24002287b23fb7e3feb6453f86366a2c53c2c1b6ed0e1fba' 
  AND token = '0H7/uTsPnFlmDPIgmflF+hps3LVupe5jeyoCwEhIWlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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