Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bd7c3bd78256c05ca9b7b778e11c25597085cbbab4826b4a5a7fbe03ceee6f7' 
  AND token = '/S/mDYabDvvCACRJshHDsTlT0Di30qidd9g/D7qWmx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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