Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '453bd8199c2864684cf5361e3c575ffe749a029efe56c00166e31e44aa14bc95' 
  AND token = 'TAX5EvO9UMqPfV/kt8CuHdWijN+lsQTIksLf4pNpFi8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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