Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c07aeae8aba098bd37046459b9909d40da52db15b671816568af844d606580e8' 
  AND token = 'B+b6kB8s25mp8wZx5Ha/du/jwK2/+PD8cfnTWGf51u8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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