Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e8aab8569d4c44eb4c0ddf062b0a9cab339b46677dc3958fc474b213c4fdaff2' 
  AND token = 'k1OK8rxUcvpo1mMwi9XyrZNwgEbeJuo7d7mNAQ1uOlc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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