Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8b5201064fbdfd2c0c59d7607e1b4001e031866dee55bb3a9d6a2f8131b2992' 
  AND token = 'HA+s/6YGs8E1t8ps0jLHAYSqyHA7SX8WP0wBg7dDhak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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