Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87ae1c85ab677182362c88318fc934254adfdae232e7564067a3aaf8b944cdfb' 
  AND token = 'YrYRYnZoWrlFA7bej0oNFrLMlD15TYKwyvM04I7w78c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00091

JSON explain

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