Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3e0c037562470d6be49573a364fed204a0deca6de04185f050fa6f446a97c2f' 
  AND token = 'qxSBCALo+qZg56YrU3tYx+F2cCAA/02GniMHz4VPZlg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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