Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3bc4ca4b3fb7113974cec9b28af9f66aa94104a0f98622d8bf1296e94d53629' 
  AND token = '41v0VgfS4tsOuy9TQpI4ntejOqcCDZXieOlGK13IYPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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