Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d62857ad7d9e7c333e0337fc01757f3479ad81921417dfd539ab32e2e9eaeb4' 
  AND token = 'OBYUrM0GeUsmgHur9HlrerWjQ4J9S8Gc7loVDIMBQUI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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