Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0fb0862967dae4e9dbb480ab7db9a35ace03d3e8caa7b8e3cab570777ef9fb6c' 
  AND token = 'aHY9YInTslW9lqmHhKjdS3PjMqgWX9Xl4EK3AOAJDpQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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