Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7b0534a050e83db1f0252083580024971c148021af09c3200b0c56dd2464893' 
  AND token = 'H06XmEI1Xrwg7R4mxd07vX4WM3yNEa0hEinUyrcH/7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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