Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1f01383f6cee74ab0dd3f3e33ce881d04c1d130163c8beff588e3caf77b16ab' 
  AND token = '4PDXWB96XjiNGIGzvrcZFMhsLta9OjvYuTkQYJpIB1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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