Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3289f9d6dd696190e7fd5922e60246fa5f5c2e8f28b127ab0196e0c2a25cf6b0' 
  AND token = 'VZRgN7tRXh6wv+eiCyXpcQjQaaSin49D2HEVHT8/Sss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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