Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59345c6470733e5c9d5cb73f53461cb3581bf81519348b3148490381cd964a9f' 
  AND token = 'N057XGmBybQHlkTgotr5n3oIAy7pYZyCBWLoRHRxT2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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