Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bcbaefb882f9343498b3887171e981c473fa9e1da0b46a8901effdb4168e787' 
  AND token = 'rn0YD9FvHUTFqkljoyyjh2+lPf582UMALYU1qSykprE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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