Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad418cfd5e5aa8f68a37aed1bb10af1f7a1513505d62196f77a16792bca799dc' 
  AND token = '2mhhSB3tpocoVv4JQNjMRHWPXPnmiL0WLTeFQeza7YI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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