Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2e8b8c977c09c08a68cac064c3cfe2ee4a5450c137e19277877a461cfc594a' 
  AND token = 'qtngNkc3VETLDK8OxrPCcX9uc0tapIG46Ercez2fbB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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