Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bab0a2fb7f117c5227f9dd5fda5781a38884045ac3dde5abc19541aa280732c' 
  AND token = 'XY1G9XOLybFt5arxfxx2kpsW/9RmBBVfF5sH/WG8jTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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