Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc82f37e86134d66577ca8c89dc99a2b8cba0fd6070ea546d809a742032c367f' 
  AND token = 'y/EaVEqHdLF67/QwWEk0oWYBmyX0nSkuVxhbp+StyRE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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