Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a262d2d497aa4839ca729fea463608f1fb5b18c3477ae1569c566c7ae2d5a61' 
  AND token = 'ggceimBAPfxVMqS0jQ2GP1aPA9bcZHqJnmDhwIatIpw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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