Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e720e9e222ad440afb530df00ebc5fea01a63ba3c7215d74e910e7894c7527ad' 
  AND token = 'XRUMMeYORzE0vRA8b9rvsyzjQ5FPRxl46kCNI1ngd4o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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