Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '848b50ccfcfd4c2e4bced524d3336a5a242da2040f75247507cbb93e327811c9' 
  AND token = 'ZhT/crV6gX9JlzZmIO9Oi2V9hep+b5cp88BIhkpV6UY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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