Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94d71ac1d29be5aae26af7e7a96d6b859d60816e07753115d6e0e5702ea5267f' 
  AND token = 'LbojnsvEYVJblpNhT0rUWzxRce9wC2e4F1xq5iUpQh0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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