Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2155bb8b0b030b02dedc4c3e4e494c61c32d7be2d9273c588942949737d3c367' 
  AND token = 'hCmymH2l4r+kBVaKEmkCe/075pzY3xGZgRgDkXjXXBM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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