Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70610728ade4e2b343b69b704470f8ee621053ca8445926751f7ed7f3ff2532c' 
  AND token = 'OLTe//EccM0XEExrwv8CSSoaE4+sZGgiot/K1W9tS9I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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