SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb083ba420a52782d5e45ded2bb0a32e58f2c6a93f26fc5e4dcf1dd79e9e3726' 
  AND token = 'rcGYmWeBfuqpVZgmYbj4/SGwVvAwxOB97kqpUc4GlH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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