Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d276ec2b610a47de96cb83b3d046c71d9f9c24d03423810e46bccd710bdf858' 
  AND token = 'w1KYeTMb9MO1Uem5VQ51uDjcbsJL/T5hPqapPnkOBXs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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