Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69e540561290441ad79a14793177ecf37608b29eff911a5a1a99d1e185d187b7' 
  AND token = 'PJoM1/LkjQdZbbu8L9PB5LEPs/J5rkjAMyguUYqLLJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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