SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae1b3f66d27995ed5d804c4bc7f845ba3a3e1c1a087ca25451a30dfa89fcd8bd' 
  AND token = 'woXAQox+8q+pvpeHUCXHBTsl2gnUyZsgOVdOKH9diMM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}