Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '473033207b75b995e4dc3b1f01d2ef8cf5a2d811d0f0bfbd2cb04f991997d130' 
  AND token = 'T116lt+X6+jjerMsLJq6+uC7rJf3ALKHadhEHFbbJI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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