Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2f05b7df6e2e3a5d5428274fbcd770966baab2a1843a7b6045457e96007f2c7' 
  AND token = '3Gw4zW4+by+hImzkT2yvm2tmHJNbSZqiOUVuJk2ab4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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