Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06d645754d5f44bef5ef7f6172ea5cc7b60f0e4dd523a40b23908ed173a07171' 
  AND token = '/nv1ARTih/1Nb11vbyeYtizm4ALzqWBSDMHoKwRPHw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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