Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9f927c9567f8e223d59b50aa8250f80b953afbc59a9e78e1194d27d41688386f' 
  AND token = '8Ru/Anrk1j5m7IW1pU0VgZyF/9ppa8TdjqLsBNf5UcI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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