Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1160e273c544d4ea3ac8863293d43b2dba11396505eb4ce3e7ab0531b1ea6d9d' 
  AND token = '32luJ+axHoy3tBmTJRu+51qya2OQpkxHKPRSxblzib4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}