SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98b3958a7d81a76e8551db73ad9be86cc572549ba73fa8023a319607aad64042' 
  AND token = 'BBGbftup/FZDcusSI1wNmwk3DDwBXLQuv+KWnC6ifs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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