Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0accca100b14eb70febfbfe7896d9317ceb8fa330d1ab3917ab716a734513b33' 
  AND token = '8PuQ8STjM7IZoNRYz3tAbWLkYzVddwmadBenReiHE88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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