Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3da6c01b9194ed9d8e83d3339abd6a9f2600437af092d923fc81cc852e881673' 
  AND token = 'o4t8YtmIIFYbQGV/H5EKS9wkcHOdhAXBGooQmQP8KDA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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