Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eda5208400902f02a33a52a0ef0b9370156c81f006bd62335841cb903c30439' 
  AND token = 'e8P+IEoa/E9PG8LeXhMWEW78TjkaBILZKipGSAqM0Qs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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