Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dec628802d08c684bca715708b2720b056612b4a282e6882d7190fc2f0a39e91' 
  AND token = 'VCxiMxNIPGUx0Z27CZdXXJKyTXdmIMkILHVJMdnb2co=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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