Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5889ef02c45dd0f61b1ff140ae4b7b2bcca26f7e5aea034f720bc03b233d00bf' 
  AND token = '+YF5AMyo9BbpWsp16Z3LwKZwbLsZzxp74VUcawgXDPo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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