Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee17313d3ce5c72b7834a84987f84aab97f8696b7f1ad192f4665d47ea67e800' 
  AND token = 'DhOYlJszgDR8C07t/not1kd73qrhm/DLkEmCyB0BjVQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}