Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '40063727c21dccb4b44b5aa3b94790ce89411d757cfe45dcd5df3321cb6aa517' 
  AND token = 'Ome/zT+8qM3WBiXyuhnuXUhmu3W32utl20eFKuwQh8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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