Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6482df5cd70673b54b261a40d5ba4b7fe0e48a94ad131214bb73d531018cdd6c' 
  AND token = 'VclRT/sgFQ7jtBrSsm/4TX8VlZCLXDBTZphTDxEBEFo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}