Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fcebcddb215d7301b7035d222c33322d68bb134576d41e7e8cabd5e11f816fbd' 
  AND token = 'JYZ3qODiRfrYWOCLm+DSF6Thn8lHs4clfOwlfOr6oMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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