Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88a80be6df8a2b0b7b36add4bc53be187aa7a9a0d9465c6b3b15adf5476b3c35' 
  AND token = 'iboTasWX7wumCF4yAzjvq0PQSymSHudb8M0NdCYBLd8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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