Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abc82c1ea9b59ebd525593710378dd5eaef73dcde02d1ebb271c9e9227b4a593' 
  AND token = 'oVDRg3lQNSzxH5bZ5tQddFQdhZpYD0X3pRJHfFM++yw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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