SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64a4ac69cd566a1c1c2c4b7f4cc0cbe7d3b1b9de6c4613d52693d852198ccfb2' 
  AND token = 'HUsKZ5YP7QPSLohTPR+7O/1DtVBq8l8CzLwjCWsEiN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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