Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ace65f713de59ae7bd49a6e4880d1b0431c170c0cdde3e5f87ca367a5891714a' 
  AND token = 'oOxKC5uQ90mEGtRvXkwiB93UK6V3HKup3F5+427mA5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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