Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad067cc6a2e6ebe66666d7a0b0eff252df7c39467825bbab50a1f29d30ed9e56' 
  AND token = '0K0QhH7vvR9cSr8YTuMhB5FwzJBPJ6W/008V11jBbDU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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