Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1aa9d4520e0c798d22155ec81b4947d543d06ec61f344f9c9d5ecf4b3468d1d8' 
  AND token = 'iTM/fTCeizVviHiCnRLgcSrV4agT0VdA/zPinsrvttM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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