Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aeedbc1aa32c6e73b6c6afa82a5f4cac5f172b92e55663eac0d86a7d66d51e1b' 
  AND token = 'ztw2+rWqj4T9jOXlrfyM0aSEDvt+OkoSxlhxz1pwfSE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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