Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da734144a71ac8f813efe0a23abf0408f49f8513db2e6f2ec30f06716af6adfe' 
  AND token = 'F0T1VR+FjFBjjTifhKhFa8A6CwC0chVldNddTWBprIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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