Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65bd06e3e90f089d222615c8c0f95a81ad0825e7b02bb59476c97a8e3860bb82' 
  AND token = 'YhCRbuJfuDycIA4Sy9rmpqbbumAH9gOPpclzUuvOy1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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