Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d8afa14531d1b2b4544b956062dd100e5553ec524c18a8192f968e1d24c9065' 
  AND token = 'yIer6CIU5rEO5dJmH3duSH84QmshvjSIHFaw7vfNWnU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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