Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69265073771d2ca8afb99df883fb820b6e7aee28221877a3df4460c74a922398' 
  AND token = 'nhvuohy+a+EtREUW/CqdQWneZeWVe2uqQGsvZnGTwxA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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