Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '425b7b98640d0d69aba8cddb920ce3d161b362e9ef5b48fd1689acaf6a9cc172' 
  AND token = 'uROHOUKzRi0QrumTtZDGLemSlJ3rNpO+6DrGJ4PrFTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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