Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd075092dfb6e06b00d8c36142f390d1fa772d376907cc043f5cbcd3f5a065d43' 
  AND token = 'vgLMNWZf7xyj6C6zOao6qn7l50G/Kt9Wi+vXqB98W5A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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