Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3529bee35247c7492466544fc3e558c4e594acdfa91a6a879c353a2b9a36fcc0' 
  AND token = 'yyztaBmlJOYY02wnorSQrV6C3pW1oqfka0j9DrqKGbE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00083

JSON explain

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