Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba9e5f1bf9371348e9dae3eac3e814b6fc455565f563cc42589191728fb407d5' 
  AND token = 'zRT8ox33Gi6GufuIh0s4waDEo2dHMeDcoJW7VqcoJcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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