Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec22a5554a2de9089cb7659008b7927e80e3225dabbaf90fc72135bef5c44cfb' 
  AND token = 'YenL+A8KvNnmtEe7rr5rCfh4Q/C5UP9FJjgyVwwXUog=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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