Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dac7bf16f6d2fd81177637de663696de09cb20a21ffac80b5131bccd24edbc65' 
  AND token = '8eD++ZxQK6ik81ktjVHS5MG5bJthmG6b+SS//ZWHdv4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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