Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '822246560afea18843c4ca1bcb6a82013c5adbc53cc4fd50ab146b582dab9b19' 
  AND token = 'avxYEvGtHgaxi1mzRO8iBWGatmnsIvk1JevlXvIm9tA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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