Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '618f8c3242a6abf9e0eb6e80ae154185c88c63094940ef91c2de444db64b075a' 
  AND token = 'Kfq321an2L9oLQBEZcks3qtqTfzG2ILjLhAHfKUnNVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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