Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd093bd58586133146c76893b384f0a49ff79e088c6d6cf7eeafeeb47ea699d0' 
  AND token = 'QhT+M1y39sNTQMKET+tZnUdV9x7kttEcUCIhCEBbSQo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00068

JSON explain

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