Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b13cca659c801b9f2728d160828fde3494456048a42024544590ac453d6e9b92' 
  AND token = 'C+bAZax0i6MXn4qiKbsagCz7VILlq1lyzs2aT9eRPWI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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