Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd40933a33806fc6aa75c8143c82cd0a214dcbeb10b3f8890136a47f7141d4315' 
  AND token = 'bTq6PXZ9toKKTteJ6MmApHTRadlPT25JcuvJokLZ7lA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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