Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3ce3cb8a7681825a5d9394ce4f0b66e39f375455ee25073365fcc6613ba9424e' 
  AND token = '7Jd14RO1u0E9KeYsur3mu62IuKqI8lVTDNIVFvTys80=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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