Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e58fcb0ee01b046cc149aa6832f21246ebf09029ca77c7c2b6525ef90d4b7bc' 
  AND token = 'hKLUvbSciGhBONn4XVMQ8vDcsX8bKTpxJJ77Z+da260=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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