Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66cdf22dc5a1202a05050bafbe7adbd02e15895ea4e2b19f8791dac7cfb5f00b' 
  AND token = 'w48XebJJJV62XHmh81TIPID8DYtIAFP0smLEN263/AQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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