Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc7f1a24f5acacc4b8305377de94abff1aed5b7c8303105eec192413f8b883a1' 
  AND token = 'kbFHY8YWTkGWawm78tX0L12sh7fvfrfgObmiJtgj6eo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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