Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '470e0b3cf39de4aeb36fd1693abfc71f0f23260b33a4bac9ba9e4d4e6973eb8c' 
  AND token = 'fND/AJh3nEc1pCu/rU6u6qUDCNSoaH+eoPDzbacFpDk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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