Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04a9433c877300b30d9ce4102c80856ad8fba82ca9937877bbe272151cc8be19' 
  AND token = 'The0C/ek1RPi9TrdVWHntVTpxmy83Ut+3cXkG/Lm8oU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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