Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58282d4d240994b3899c7ddee75be4d338b16944cdc6f3048ea34093b44a1ce1' 
  AND token = '14Q387UCzy0ilYZp7Ionp5RYEm9PvohahrH6b4K3Jr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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