Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '176b5069394a9512e1a8247bbd556e836d2c76fb03393dac6b4a3e02a98882a0' 
  AND token = 'q/N3Uk8syIbMVRkoGiaMn96hjCtHd/elvm+rcIFLXYU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00055

JSON explain

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