Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e851a96afb81f4bed26f5988fec8e17a18c966774c10fbb1b4459ae9c3380f5' 
  AND token = 'pKicI5EpWg4hHBKK5XXWQq3TxzpOTGHarHD+eIMNlCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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