Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e9693b464c982e7832148f6f576680e8ebe5e551c3292fe5d92271731a1525f' 
  AND token = 'HpYS9AIH+bM1Q00hC8gaSj7BwfY7pkliY5nhANReTKk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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