Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d4b055fc926bc280939651c9988a1ebc748ea32c8e9a480992de690be8f1e25' 
  AND token = 'INpFyUmmCVgh2fr7+2umy2ASm5jQsKtpkyaZrV7N+j0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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