Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6465f3ba4068f6e67344065f36dbff15e180e8c3d01b678301485b072c512d30' 
  AND token = 'HADZ3WECposLtuqc8zf1tmd8LvbXf2t2lCjiowOaHkk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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