Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b5e102821349514cdd4f8a9f58e65dbcc9141082c25a516b50d733ba96b7d855' 
  AND token = 'nD+ZvYwwisLHrbSm+54ohxndbztpwa+B7r1g7Vr7MN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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