SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '094bb252501ce471c9b432987e99f3923ba4ca72ff6bb4262a39d022e45501a7' 
  AND token = '59Lihawq1CrKuc/EOMoQqsjG+vieQ4Zl4rd9RJGmZxk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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