Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23118905b4d3daf381f1995b040965304f3a9fcbcbc3282fbd2894161f8eefa9' 
  AND token = 'L+dMZ9z8No12r/ipn9gjRLK5UmKxJGNHMZ/vreAGens=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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